Fire element, The zodiac is divided into 4 elements73 signs adopted by each. Aries, Leo and Sagittarius are the fire signs. But you are not simply your Sun sign. You’re a combination of planetary placements, consider your Moon, Venus and all your star signs. When an astrologer looks at a birth chart they’ll sometimes notice a predominant element, or they’ll take the strongest element based on the personal planets, the Sun, Moon, Venus, Mars and Mercury, plus the ascendant and midheaven.